CVE-2026-70584

HIGHPre-NVD 7.87.8—
EchelonGraph scoreHIGH confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-09-08. the CNA's CVSS baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:microsoft, epss, ghsa
Trending — 4 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Access of resource using incompatible type ('type confusion') in Windows Core Messaging allows an authorized attacker to elevate privileges locally.

CVSS v3
7.8
EG Score
7.8(high)
EG Risk
35(Track)
EG Risk 35/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity78% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
25%
KEV
Not listed

Published

September 8, 2026

Last Modified

September 18, 2026

Advisory Details (1)

Auto-updated Sep 8, 2026
Patch available. Sources: microsoft.
microsoft Patch Available

Security Update Guide - Microsoft Security Response Center

Security Update Guide - Microsoft Security Response Center. Patch available via Microsoft Security Update

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70584

Vendor Advisories for CVE-2026-70584(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 47× in last 7d / 92× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-19 19:45 UTCEG score recompute
  2. 2026-09-19 19:45 UTCVendor advisory
  3. 2026-09-19 19:45 UTCGHSA enrichment
  4. 2026-09-19 08:17 UTCVendor advisory
  5. 2026-09-19 08:16 UTCGHSA enrichment
  6. 2026-09-18 20:49 UTCEG score recompute
  7. 2026-09-18 20:49 UTCVendor advisory
  8. 2026-09-18 20:49 UTCGHSA enrichment
  9. 2026-09-18 19:28 UTCEPSS rescore
  10. 2026-09-18 13:52 UTCVendor advisory
  11. 2026-09-18 13:52 UTCGHSA enrichment
  12. 2026-09-18 10:39 UTCVendor advisory
  13. 2026-09-18 10:39 UTCGHSA enrichment
  14. 2026-09-17 23:11 UTCVendor advisory
  15. 2026-09-17 23:11 UTCGHSA enrichment
  16. 2026-09-17 19:58 UTCEG score recompute
  17. 2026-09-17 19:58 UTCVendor advisory
  18. 2026-09-17 19:58 UTCGHSA enrichment
  19. 2026-09-17 09:44 UTCVendor advisory
  20. 2026-09-17 09:44 UTCGHSA enrichment
  21. 2026-09-16 22:16 UTCEG score recompute
  22. 2026-09-16 22:16 UTCVendor advisory
  23. 2026-09-16 22:16 UTCGHSA enrichment
  24. 2026-09-16 14:08 UTCEPSS rescore
  25. 2026-09-16 10:44 UTCEG score recompute
Show 67 more
  1. 2026-09-16 10:44 UTCVendor advisory
  2. 2026-09-16 10:44 UTCGHSA enrichment
  3. 2026-09-16 05:15 UTCEPSS rescore
  4. 2026-09-15 23:10 UTCVendor advisory
  5. 2026-09-15 23:10 UTCGHSA enrichment
  6. 2026-09-15 18:06 UTCVendor advisory
  7. 2026-09-15 18:06 UTCGHSA enrichment
  8. 2026-09-15 10:57 UTCEG score recompute
  9. 2026-09-15 10:57 UTCVendor advisory
  10. 2026-09-15 10:57 UTCGHSA enrichment
  11. 2026-09-15 03:12 UTCEPSS rescore
  12. 2026-09-14 23:20 UTCVendor advisory
  13. 2026-09-14 23:20 UTCGHSA enrichment
  14. 2026-09-14 17:23 UTCVendor advisory
  15. 2026-09-14 17:23 UTCGHSA enrichment
  16. 2026-09-14 08:29 UTCVendor advisory
  17. 2026-09-14 08:29 UTCGHSA enrichment
  18. 2026-09-13 21:01 UTCEG score recompute
  19. 2026-09-13 21:01 UTCVendor advisory
  20. 2026-09-13 21:01 UTCGHSA enrichment
  21. 2026-09-13 09:33 UTCVendor advisory
  22. 2026-09-13 09:33 UTCGHSA enrichment
  23. 2026-09-12 22:05 UTCEG score recompute
  24. 2026-09-12 22:05 UTCVendor advisory
  25. 2026-09-12 22:05 UTCGHSA enrichment
  26. 2026-09-12 15:02 UTCEPSS rescore
  27. 2026-09-12 10:36 UTCVendor advisory
  28. 2026-09-12 10:35 UTCGHSA enrichment
  29. 2026-09-11 23:05 UTCVendor advisory
  30. 2026-09-11 23:05 UTCGHSA enrichment
  31. 2026-09-11 19:46 UTCVendor advisory
  32. 2026-09-11 19:46 UTCGHSA enrichment
  33. 2026-09-11 17:07 UTCEG score recompute
  34. 2026-09-11 17:07 UTCVendor advisory
  35. 2026-09-11 17:07 UTCGHSA enrichment
  36. 2026-09-11 14:53 UTCEPSS rescore
  37. 2026-09-11 11:16 UTCEG score recompute
  38. 2026-09-11 11:15 UTCGHSA enrichment
  39. 2026-09-10 23:42 UTCGHSA enrichment
  40. 2026-09-10 20:31 UTCEG score recompute
  41. 2026-09-10 20:31 UTCGHSA enrichment
  42. 2026-09-10 09:35 UTCEPSS rescore
  43. 2026-09-10 09:03 UTCGHSA enrichment
  44. 2026-09-09 21:35 UTCVendor advisory
  45. 2026-09-09 21:35 UTCGHSA enrichment
  46. 2026-09-09 20:16 UTCEG score recompute
  47. 2026-09-09 20:16 UTCVendor advisory
  48. 2026-09-09 20:16 UTCGHSA enrichment
  49. 2026-09-09 16:58 UTCVendor advisory
  50. 2026-09-09 16:58 UTCGHSA enrichment
  51. 2026-09-09 05:30 UTCEG score recompute
  52. 2026-09-09 05:30 UTCVendor advisory
  53. 2026-09-09 05:30 UTCGHSA enrichment
  54. 2026-09-09 04:38 UTCVendor advisory
  55. 2026-09-09 04:38 UTCGHSA enrichment
  56. 2026-09-09 00:12 UTCEG score recompute
  57. 2026-09-09 00:12 UTCVendor advisory
  58. 2026-09-09 00:12 UTCGHSA enrichment
  59. 2026-09-08 20:44 UTCEG score recompute
  60. 2026-09-08 20:44 UTCGHSA enrichment
  61. 2026-09-08 19:43 UTCEG score recompute
  62. 2026-09-08 19:43 UTCGHSA enrichment
  63. 2026-09-08 19:16 UTCEG score recompute
  64. 2026-09-08 19:16 UTCGHSA enrichment
  65. 2026-09-08 18:00 UTCEG score recompute
  66. 2026-09-08 18:00 UTCVendor advisory
  67. 2026-09-08 17:25 UTCMITRE cvelistV5first tracked

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-70584?
CVE-2026-70584 is a high vulnerability published on September 8, 2026. Access of resource using incompatible type ('type confusion') in Windows Core Messaging allows an authorized attacker to elevate privileges locally.
When was CVE-2026-70584 disclosed?
CVE-2026-70584 was first published in the National Vulnerability Database on September 8, 2026, with the most recent update on September 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-70584 actively exploited?
CVE-2026-70584 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 75.0% of all scored CVEs.
What is the CVSS score of CVE-2026-70584?
CVE-2026-70584 has a CVSS v4.0 base score of 7.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-70584?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-70584, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-70584

Explore →

Is Your Infrastructure Affected by CVE-2026-70584?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs